意大利ATOS比例閥主要體現在以下幾點: 1.驅(qu)(qu)動裝置(zhi)(zhi)不(bu)同。比(bi)例閥的驅(qu)(qu)動裝置(zhi)(zhi)是比(bi)例電磁鐵;伺服閥的驅(qu)(qu)動裝置(zhi)(zhi)是力馬達(da)或(huo)力矩馬達(da); 2.性(xing)能參數不(bu)(bu)同。滯環(huan)(huan)(huan)、中位死區、頻(pin)寬、過濾精度(du)(du)等特性(xing)不(bu)(bu)同,因此(ci)應(ying)用場合不(bu)(bu)同,伺服閥和伺服比(bi)例閥主(zhu)要應(ying)用在閉環(huan)(huan)(huan)控制(zhi)系統(tong),其(qi)它結構的比(bi)例閥主(zhu)要應(ying)用在開環(huan)(huan)(huan)控系統(tong)及(ji)閉環(huan)(huan)(huan)速度(du)(du)控制(zhi)系統(tong); - 伺服閥(fa)中位沒有死區(qu),比(bi)例閥(fa)有中位死區(qu);
- 伺服閥的頻(pin)(pin)響(xiang)(響(xiang)應(ying)頻(pin)(pin)率)更(geng)高,可(ke)以高達200Hz左右,比例閥一(yi)般(ban)zui高幾十Hz;
- 伺服閥對液(ye)壓油液(ye)的要求(qiu)更高,需要精過濾才行,否(fou)則容易堵塞,比例閥要求(qiu)低一(yi)些(xie);
3.閥(fa)(fa)(fa)芯結構及(ji)加工(gong)精度(du)不同。比(bi)例閥(fa)(fa)(fa)采用(yong)閥(fa)(fa)(fa)芯+閥(fa)(fa)(fa)體(ti)(ti)結構,閥(fa)(fa)(fa)體(ti)(ti)兼作閥(fa)(fa)(fa)套。伺(si)服閥(fa)(fa)(fa)和(he)伺(si)服比(bi)例閥(fa)(fa)(fa)采用(yong)閥(fa)(fa)(fa)芯+閥(fa)(fa)(fa)套的(de)結構。 4.中(zhong)(zhong)位機能種類不(bu)同。比例換向閥(fa)(fa)具(ju)有與普通換向閥(fa)(fa)相(xiang)似的中(zhong)(zhong)位機能,而伺(si)服閥(fa)(fa)中(zhong)(zhong)位機能只(zhi)有O型(Rexroth產品的E型)。 5.閥的額定(ding)壓降不同(tong)。 電(dian)氣(qi)比(bi)例閥(fa)自動(dong)控(kong)(kong)制(zhi)可分成斷(duan)(duan)續控(kong)(kong)制(zhi)和(he)連(lian)續控(kong)(kong)制(zhi)。斷(duan)(duan)續控(kong)(kong)制(zhi)即開關控(kong)(kong)制(zhi)。氣(qi)動(dong)控(kong)(kong)制(zhi)系統(tong)中使用(yong)動(dong)作頻率較低的(de)(de)開關式(ON-OFF)的(de)(de)換向閥(fa)來(lai)控(kong)(kong)制(zhi)氣(qi)路的(de)(de)通(tong)斷(duan)(duan)。靠減壓閥(fa)來(lai)調(diao)節(jie)(jie)所(suo)需(xu)要(yao)的(de)(de)壓力,靠節(jie)(jie)流閥(fa)來(lai)調(diao)節(jie)(jie)所(suo)需(xu)要(yao)的(de)(de)流量(liang)。這種傳統(tong)的(de)(de)氣(qi)動(dong)控(kong)(kong)制(zhi)系統(tong)要(yao)想要(yao)有多(duo)(duo)個(ge)輸(shu)出力和(he)多(duo)(duo)個(ge)運動(dong)速(su)度(du),就(jiu)需(xu)要(yao)多(duo)(duo)個(ge)減壓閥(fa)、節(jie)(jie)流閥(fa)及換向閥(fa)。這樣,不僅元件需(xu)要(yao)多(duo)(duo),成本高,構(gou)成系統(tong)復雜(za),且許多(duo)(duo)元件都需(xu)要(yao)預先(xian)進行人(ren)工調(diao)節(jie)(jie)。電(dian)氣(qi)比(bi)例閥(fa)控(kong)(kong)制(zhi)屬于連(lian)續控(kong)(kong)制(zhi),其特點是輸(shu)出量(liang)隨輸(shu)入量(liang)的(de)(de)變(bian)化(hua)而(er)變(bian)化(hua),輸(shu)出量(liang)與輸(shu)入量(liang)之間(jian)存在一定(ding)的(de)(de)比(bi)例關系。比(bi)例控(kong)(kong)制(zhi)有開環控(kong)(kong)制(zhi)和(he)閉(bi)環控(kong)(kong)制(zhi)之分。 意大利ATOS比例閥型號表: LIMZA-A-1/180/M 20 LIMZA-A-3/180/M 40 LIMZO-A-3/210 LIMZO-A-4/210 LIMZO-A-5/315/P 30 LIMZO-AE-4/315 10 LIMZO-TER-4/210 50 LIMZO-TER-4/210/I LIQV-2 20 LIQV-2/K LIQZO-A-252S4 LIQZO-L-252L4 50 LIQZO-L-322L4 50 LIQZO-LE-402L4 50 LIQZO-LE-502L4 50 LIQZO-LE-632L4 51 LIQZO-T-252L4 LIQZO-T-252L4 50 /PE LIQZO-T-322L4 50 LIQZO-T-402L4 LIQZO-TE-322L4 50 LIRA-1/100 20 LIRA-1/210 20 LIRA-2/210/V 20 LIRA-3/100 LIRA-4/210/V 11 LIRZO-A-1/210 QVHZO-A-06/12 20 QVHZO-A-06/18 QVHZO-A-06/3 QVHZO-A-06/36 QVHZO-A-06/45 QVHZO-AE-06/3/I 10 QVHZO-AE-06/45/I QVHZO-T-06/12 31 QVHZO-T-06/3 31/WG QVHZO-TE-06/18 40 QVHZO-TE-06/18/I 40 QVHZO-TE-06/3 40 QVKMZOR-A-10/90/210/18 QVKZOR-A-10/65 QVKZOR-AE-10/90 10 QVKZOR-AES-BC-10/65 10? |